tt gwd-3-4感觉没有正确答案亚！

pinkcutie

In the year following an eight-cent increase in the federal tax on a pack of cigarettes, sales of cigarettes fell ten percent.  In contrast, in the year prior to the tax increase, sales had fallen one percent.  The volume of cigarette sales is therefore strongly related to the after-tax price of a pack of cigarettes.

 

The argument above requires which of following assumptions?

 

1. During the year following the tax increase, the pretax price of a pack of cigarettes did not increase by as much as it had during the year prior to the tax increase.

2. The one percent fall in cigarette sales in the year prior to tax increase was due to a smaller tax increase.

3. The pretax price of a pack of cigarettes gradually decreased throughout the year before and the year after the tax increase.

4. For the year following the tax increase, the pretax price of a pack of cigarettes was not eight or more cents lower than it had been the previous year.

5. As the after-tax price of a pack of cigarettes rises, the pretax price also rises.

答案是d为什么呢

我读了好几遍，觉得每一个答案是对的

wycg

不可能选项都对.把文章翻成中文,写下来,一句一句看懂.然后到选项里面找,把选项一个一个排除. 把这个题弄懂了,GWD里的这一类题就都会了. 

yboo

LZ想说“没一个答案是对的”吧。

搜一下，以前讨论过这道题。

[此贴子已经被作者于2006-11-8 12:24:27编辑过]

pinkcutie

谢谢

搜到了